fix IT

Signed-off-by: Lantao Jin <ltjin@amazon.com>

Author: LantaoJin

integ-test/src/test/java/org/opensearch/sql/ppl/StatsCommandIT.java

@@ -436,17 +436,17 @@ public void testStatsPercentileWithNull() throws IOException {
   public void testStatsPercentileWithCompression() throws IOException {
     JSONObject response =
         executeQuery(
-            String.format("source=%s | stats percentile(balance, 50, 1)", TEST_INDEX_BANK));
-    verifySchema(response, schema("percentile(balance, 50, 1)", null, "bigint"));
-    verifyDataRows(response, rows(29493));
+            String.format("source=%s | stats percentile(balance, 50, 20)", TEST_INDEX_BANK));
+    verifySchema(response, schema("percentile(balance, 50, 20)", null, "bigint"));
+    verifyDataRows(response, rows(32838));
 
     // disable pushdown by adding a eval command
     JSONObject responsePushdownDisabled =
         executeQuery(
             String.format(
-                "source=%s | eval a = 1 | stats percentile(balance, 50, 1)", TEST_INDEX_BANK));
-    verifySchema(responsePushdownDisabled, schema("percentile(balance, 50, 1)", null, "bigint"));
-    verifyDataRows(responsePushdownDisabled, rows(29493));
+                "source=%s | eval a = 1 | stats percentile(balance, 50, 20)", TEST_INDEX_BANK));
+    verifySchema(responsePushdownDisabled, schema("percentile(balance, 50, 20)", null, "bigint"));
+    verifyDataRows(responsePushdownDisabled, rows(32838));
   }
 
   @Test